A multiple PW GTO line-side converter for unity power factor and reduced harmonics

Author

Sukegawa, Takashi ; Kamiyama, Kenzo ; Takahashi, Junichi ; Ikimi, Takashi ; Matsutake, Mitsugu

Author_Institution

Hitachi Ltd, Ibaraki, Japan

Volume

28

Issue

6

fYear

1992

Firstpage

1302

Lastpage

1308

Abstract

A multiple PWM GTO line-side converter with low switching frequency has been developed for industrial uses needing both higher capacity and higher performance. The multiple converter is composed of two GTO converter units connected in parallel through an interphase reactor. The switching frequency of the GTO thyristors in the multiple converter can be reduced to a quarter of that in the single converter. It is verified by simulations and experiments with a 2750 kVA GTO converter and inverter system with a 500 Hz switching frequency that the system has: (1) a unity power factor, (2) reduced harmonics, (3) bidirectional power flow, and (4) speed regulatory performance equal to that of an advanced cycloconverter drive system. Analogies between inverter control and converter control are also studied for the development of the converter control

Keywords

harmonics; power convertors; power factor; pulse width modulation; thyristor applications; 2750 kVA; 500 Hz; bidirectional power flow; capacity; harmonics; interphase reactor; invertors; multiple PW GTO line-side converter; performance; speed regulatory performance; switching frequency; unity power factor; Bidirectional power flow; Inductors; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Switching converters; Switching frequency; Thyristors;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.175281

Filename

175281